Criting?

[Worsewarm]

So I recently start playing class duels myself Diamond title in a short period which I think it’s not bad. But however, when I am grinding wins, I always get out damaged for some reason. And I was told that doing critical hits while comboing.And it gives a high damage load out. And I have a several questions,
1. How do I crit hit while not getting combod?
2. When do I crit?
3. Do I keep crit hitting or crit once every several hits?
Thanks forums

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